• Corpus ID: 244773631

Perturbative and non-perturbative effects in ultraperipheral production of lepton pairs

@inproceedings{Dremin2021PerturbativeAN,
  title={Perturbative and non-perturbative effects in ultraperipheral production of lepton pairs},
  author={I. M. Dremin},
  year={2021}
}
Perturbative and non-perturbative terms of the cross sections of ultraperipheral production of lepton pairs in ion collisions are taken into account. It is shown that production of low-mass e+e− pairs is strongly enhanced (compared to perturbative estimates) due to the non-perturbative Sommerfeld-Gamow-Sakharov (SGS) factor. Coulomb attraction of the non-relativistic components of those pairs leads to the finite value of their mass distribution at lowest relative velocities. Their annihilation… 

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